In ''LGP'', Chomsky hypothesizes thatthe following: Universal Grammar (UG) is the essential set of linguistic universals that every human child is born with. The UG contains a number of fixed "principles" that are true for all languages. Also embedded in the UG are flexible "parameters" that hashave to be fixed by experience. As the human child gains linguistic experience, its brain uses the limited linguistic evidence (see [[Poverty of the stimulus]]) thatat it isits exposeddisposal to fix the parameters of UG and give rise to, in a non-inductive manner, the core grammar of the child's first language in its brain.<ref>Chomsky 1981 : 3-4</ref>
